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NET2890 Arkusz danych(PDF) 71 Page - List of Unclassifed Manufacturers |
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NET2890 Arkusz danych(HTML) 71 Page - List of Unclassifed Manufacturers |
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71 / 73 page ![]() Specification NET2890 USB Interface Controller ____________________________________________________________________________________ NetChip Technology, Inc., 1999 335 Pioneer Way, Mountain View, California 94041 TEL (650) 526-1490 FAX (650) 526-1494 http://www.netchip.com Rev 2.0, Draft 9, July 16, 1999 71 7.4.6 DMA Write to FIFO NAME DESCRIPTION MIN MAX UNIT T1 DRQ false from write enable true 42 64 ns T2 Write enable false to DRQ true 60 ns T3 Write enable width 25 ns T5 Data setup to end of write enable 5 ns T6 Data hold time from end of write enable 0 ns T7 Width of EOT# pulse (see note) 25 ns * Write enable is the occurrence of both IOW# and DACK#. Note: EOT#, IOW#, and DACK# must all be true for at least T7 for proper recognition of the EOT# pulse. T1 T2 T1 T3 T5 T3 T5 T6 T6 T7 D0 D1 0ns 50ns 100ns 150ns 200ns DRQ IOW#/DACK# D[7:0] EOT# |
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